Don't be fooled by the small square footage of these apartments; they're actually roomy homes in disguise. Thanks to walls the move, furniture that folds away, and disappearing kitchens, these apartments can store numerous rooms in a very tiny space.

A 940-sq ft (87-sqm) apartment designed by Yuko Shibata architects in Tokyo, Japan

Roll It, an experimental home designed at the University of Karlsruhe, Germany

The 420-sq ft (39-sqm) home of Graham Hill in SoHo, New York City, with sliding walls, fold-down bunk beds, a dinner table for twelve, solar panels, built-in sound system and a pull-down cinema screen, among others